Remark In REF  of Algorithm REF , we call the momentum SGD [1]}, in which the following expression is substituted for the update expression.
\(\alpha _l^{(\mu +1)}:=\alpha _l^{(\mu )}-\tau G[\alpha ]_l^{(\mu )}+\tau _1(\alpha _l^{(\mu )}-\alpha _l^{(\mu -1)})\) 
